Transmission Service and OASIS

Transmission Service Overview

GridLiance Heartland owns and operates facilities under functional control of the Midcontinent Independent System Operator (MISO) as well as outside of MISO. The Open Access Same-time Information System (OASIS) sites are used for customers to request transmission services and to designate and terminate network resources and for the transmission providers to post required information, such as business practices, transfer capability, transmission service products and prices.

Transmission Service and OASIS for facilities under MISO functional control

GLH (MISO) OASIS
Tariff (MISO)

Transmission Service and OASIS for facilities not under MISO functional control

GLHB (Non-MISO) OASIS
Tariff (Effective March 1, 2020)